Do you know how farmers grow vegetables and how to control tomato gray mold?

A boy surnamed Lin from a neighboring village hurried to the village to find an expert grower, Uncle Zhang, and told Uncle Zhang that his tomato was suffering from some disease, which was quite serious, so he asked Uncle Zhang to have a look in the field. Uncle Zhang went to the field and found that there were diseases in the flowers, fruits, leaves and stems of tomatoes. The infected green fruit suffered seriously, and the peel was grayish white, soft and rotten, and a large number of grayish-brown mildew layers grew in the disease department. The diseased spot on the tip of the infected leaf extends inward with "V".

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Some appear water-immersed, light brown, the edges are not planned, there are dark and light wheel lines, some have dried up, there are gray molds on the surface, some plants also have diseases on the stems, some have water-immersed spots, some have expanded into large circles or long strips, and there is also a grayish-brown mildew layer on the spots, and several serious plants have withered and died above the disease. Uncle Zhang said that from the above symptoms, we can see that Kobayashi's tomatoes have Botrytis cinerea, so how to prevent and cure Botrytis cinerea? Uncle Zhang said that there are the following ways to control tomato gray mold.

First, cultivation management: in the initial stage of the disease, we should properly control watering, strictly prevent excessive watering, strengthen management after each watering, prevent dew, remove diseased fruits in time, burn diseased leaves and side branches or bury them deeply.

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Second, agro-ecological prevention and control: strengthen the ventilation management in the shed, ventilate at night in the sunny morning, and start to turn to the top wind when the temperature in the shed rises to 33 ℃. In the afternoon, the temperature in the shed should be kept at about 20: 25 ℃, and at night the temperature should be kept at about 15: 17 ℃.

Third, chemical control: choose to use drugs in the critical period, 1. Spray before planting, 2. Take medicine when dipping flowers, 3. Spray one day before pouring fruit water. Smoke agent or dust agent can also be used at the beginning of the disease.

What do you think of these prevention and control methods? Do you have a better method of prevention and control?

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